When people ask me what a hackathon is, I usually send them to <a href="http://lmgtfy.com/?q=what+is+a+hackathon" rel="nofollow">http://lmgtfy.com/?q=what+is+a+hackathon</a> - making this link useless.
I get so sick of explaining 'its not that kind of hacking' that I just quit using the term to non-techies lol. <a href="http://www.radiumcrm.com" rel="nofollow">http://www.radiumcrm.com</a>